Question

What are olfactory indicator? Mention two examples.

Answer 1

substances whose smell change in acidic or basic solutions are called as olfactory indicators.
An olfactory indicator works on the principle that when an acid or base is added its characteristics smell cannot be detected.
Example onion and vanilla extract.
onion has a characteristic smell. when basic solution Is added its smell cannot be detected.

Answer 2

Answer:

example of olfactory indicator are: vanilla extract , clove oil and onion

Explanation:

olfactory indicator are indicators whose smell varies depending on whether it is mixed with acid or a base..